Hi > In both cases, they don't provide any serious study. they only show > numbers that go with their claims. I don't know for others, but my logs > don't seem to confirm theirs.
Where do they show numbers? Could not find any. > and the slowdown thing is based on the theory that spammers have better > things to do than wait. now that we know more about botnets, this theory > doesn't stand. I mostly agree with that. My BarricadeMX still catches around 1-2 percent of spam due to greet-pause and command-delays (at least on my secondaryMX and most customer systems). However this is after 90% of all connection attempts are killed due to blacklists anyhow. Without using blacklists this percentage would be a lot higher. Grey listing with content hashing catches around 10% and seems more effective. So yes: If their main "benefit" is tarpitting etc. then I agree it probably is not worth the money or discussion. Regards, JP
